Well the check valve is good....works great and I even sucked on the booster and it holds vacuum...

Hey Cass, You are probably right.....My old man has a set of wilwoods...He said he switched pads and it made a day and night difference... Said they ate up his front rotors in a year though.

I guess a 1" bore would put a little more pressure on these things...I have an adjustable proportioning valve sitting here to throw in anyway...might as well do it all at once